Hackers steal data from less secure forums or niche websites.
These lists are rarely from a single massive breach of a company like Valve (Steam) or Netflix. Instead, they are usually : 269k (STEAM,NETFLIX,HUBO,EPICGAMES,PORNHUB...)...
Compromised accounts are often sold for a fraction of their subscription cost on "gray market" sites, allowing others to use your paid service for free. Hackers steal data from less secure forums or niche websites
Credentials for these are often used to spread spam or phishing links to a user's contact list. How These Lists Are Created Credentials for these are often used to spread
If you suspect your information might be part of such a leak, take these immediate steps:
Platforms like Steam (via Steam Guard) and Epic Games offer 2FA. This ensures that even if a hacker has your password, they cannot log in without a secondary code from your phone.